【摘 要】
：
Five novel lanthanide polymers[Ln(3,4-DMOBA)3(H2O)2]·H2O·C2H5OH(Ln=Sm(1),Eu(2),Tb(3),Dy(4),Ho(5);3,4-DMOBA=3,4-dimethoxybenzoate)have been synthesized on hydrothermal condition and characterized by el
【机 构】
：
Testing and Analysis Center,Hebei Normal University,Shijiazhuang 050024 P.R. China;College of Chemis
论文部分内容阅读
Five novel lanthanide polymers[Ln(3,4-DMOBA)3(H2O)2]·H2O·C2H5OH(Ln=Sm(1),Eu(2),Tb(3),Dy(4),Ho(5);3,4-DMOBA=3,4-dimethoxybenzoate)have been synthesized on hydrothermal condition and characterized by elemental analysis,conductivity measurements,IR spectra,single crystal X-ray diffraction and thermogravimetric differential scanning calorimetry/Fourier transform infrared(TG/DSC-FTIR)technology.Single crystal structures indicate that the center metal of each complex is coordinated by eight oxygen atoms to form the distorted triangular dodecahedral geometry.Adjacent lanthanide ions are connected by 3,4-DMOBA ligands adopting bridging bidentate mode to generate one-dimensional(1-D)structure.Uncoordinated water and ethanol molecules connect with coordinated oxygen atoms by hydrogen bond to form a three-dimensional(3-D)framework.The fluorescent property of complexes 2 and 3 have been measured at room temperature and display the characteristic emission of Eu3+and Tb3+ions,respectively.The thermal decomposition processes of the title complexes and the evolved gases were investigated by TG/DSC-FTIR technology.
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